Roksolana Diachuk created HADOOP-16301:
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Summary: No enum constant Operation.GET_BLOCK_LOCATIONS
Key: HADOOP-16301
URL: https://issues.apache.org/jira/browse/HADOOP-16301
Project: Hadoop Common
Issue Type: Bug
Components: common, fs
Affects Versions: 2.8.5, 2.7.7, 2.9.2, 2.7.6, 2.8.4, 2.9.1, 3.0.0, 2.7.5,
2.8.3, 2.8.2, 2.8.1, 2.7.4, 2.9.0, 2.7.3, 2.7.2, 2.7.1, 2.8.0, 2.7.0, 2.7.8,
2.8.6
Environment: Running on Ubuntu 16.04
Hadoop v2.7.4
Minikube v1.0.1
Scala v2.11
Spark v2.4.2
Reporter: Roksolana Diachuk
I was trying to read Avro files contents from HDFS using Spark application and
Httpfs configured in minikube (for using Kubernetes locally). Each time I try
to read the files I get this exception:
{code:java}
Exception in thread "main"
org.apache.hadoop.ipc.RemoteException(com.sun.jersey.api.ParamException$QueryParamException):
java.lang.IllegalArgumentException: No enum constant
org.apache.hadoop.fs.http.client.HttpFSFileSystem.Operation.GET_BLOCK_LOCATIONS
at org.apache.hadoop.hdfs.web.JsonUtil.toRemoteException(JsonUtil.java:118)
at
org.apache.hadoop.hdfs.web.WebHdfsFileSystem.validateResponse(WebHdfsFileSystem.java:367)
at
org.apache.hadoop.hdfs.web.WebHdfsFileSystem.access$200(WebHdfsFileSystem.java:98)
at
org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.runWithRetry(WebHdfsFileSystem.java:625)
at
org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.access$100(WebHdfsFileSystem.java:472)
at
org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner$1.run(WebHdfsFileSystem.java:502)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1746)
at
org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.run(WebHdfsFileSystem.java:498)
at
org.apache.hadoop.hdfs.web.WebHdfsFileSystem.getFileBlockLocations(WebHdfsFileSystem.java:1420)
at
org.apache.hadoop.hdfs.web.WebHdfsFileSystem.getFileBlockLocations(WebHdfsFileSystem.java:1404)
at org.apache.hadoop.mapred.FileInputFormat.getSplits(FileInputFormat.java:343)
at org.apache.spark.rdd.HadoopRDD.getPartitions(HadoopRDD.scala:204)
at org.apache.spark.rdd.RDD$$anonfun$partitions$2.apply(RDD.scala:253)
at org.apache.spark.rdd.RDD$$anonfun$partitions$2.apply(RDD.scala:251)
at scala.Option.getOrElse(Option.scala:121)
at org.apache.spark.rdd.RDD.partitions(RDD.scala:251)
at
org.apache.spark.rdd.MapPartitionsRDD.getPartitions(MapPartitionsRDD.scala:49)
at org.apache.spark.rdd.RDD$$anonfun$partitions$2.apply(RDD.scala:253)
at org.apache.spark.rdd.RDD$$anonfun$partitions$2.apply(RDD.scala:251)
at scala.Option.getOrElse(Option.scala:121)
at org.apache.spark.rdd.RDD.partitions(RDD.scala:251)
at org.apache.spark.SparkContext.runJob(SparkContext.scala:2126)
at org.apache.spark.rdd.RDD$$anonfun$collect$1.apply(RDD.scala:945)
at
org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:151)
at
org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:112)
at org.apache.spark.rdd.RDD.withScope(RDD.scala:363)
at org.apache.spark.rdd.RDD.collect(RDD.scala:944)
at spark_test.TestSparkJob$.main(TestSparkJob.scala:48)
at spark_test.TestSparkJob.main(TestSparkJob.scala){code}
I access HDFS using Httpfs setup in Kubernetes. So my Spark application runs
outside of the K8s cluster therefore, all the services are accessed using
NodePorts. When I launch the Spark app inside of the K8s cluster and use only
HDFS client or WebHDFS, I can get all the files contents. The error occurs only
when I execute an app outside of the cluster and that is when I access HDFS
using Httpfs.
So I checked Hadoop sources and I have found out that there is no such enum as
GET_BLOCK_LOCATIONS. It is named GETFILEBLOCKLOCATIONS in Operation enum by
[this
link|[https://github.com/apache/hadoop/blob/release-2.7.4-RC0/hadoop-hdfs-project/hadoop-hdfs-httpfs/src/main/java/org/apache/hadoop/fs/http/client/HttpFSFileSystem.java]].
And the same applies to all the Hadoop versions I have checked (2.7.4 and
higher).
The conclusion would be that HDFS and HttpFs are not compatible with operations
names. But it may be true for other operations. So It is not yet possible to
read the data from HDFS using Httpfs.
Is it possible to fix this error somehow?
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